.px2rem(@name, @px) {
    @{name}: @px / 75 * 1rem;
}
.txh{
	display: flex;
}
html,doby{
	width: 100%;
	height: 100%;
    background: #f7f7f7;

#box{
	header{
		.px2rem(height,84);
		.px2rem(line-height,84);
		width: 100%;
		position: fixed;
		top: 0;
		left: 0;
		background: #fff;
		border-bottom: 1px solid #ccc;
		ul{
            .txh;
            justify-content:space-between;
			li{
              .px2rem(margin-left,30);
		      .px2rem(margin-right,30);
		      .px2rem(font-size,30);
			}
		}

	}
	section{
		.px2rem(margin-top,84);
		.menu{
			padding-top: 5%;
			padding-left: 3%;
			padding-right: 3%;
			text-align: center;
			p{
              
              .px2rem(font-size,30);
              padding-top: 5%;
              .px2rem(line-height,40);
			}
			p:nth-child(1){
				.px2rem(font-size,50);
			}
		}
		
	   
	}
	
}
}